Standard for Installation of Fire Safety Devices based on Use and Occupancy Article 109

Pressure-maintaining dry chemicals fire extinguishing equipments shall be equipped with pressure gauge indicating the range of working pressure in green.
中文原文 各類場所消防安全設備設置標準第109條
蓄壓式乾粉滅火設備應設置以綠色表示使用壓力範圍之指示壓力表。

English translation for reference only; the Chinese text prevails. Not legal advice.